Collection: Airtight & Windtight Systems

Airtightness and Widtightness are essential aspects to consider when building or renovating. Air leakage into and out of a property can be detrimental to the thermal performance of insulation. Creating an airtight seal in the property helps minimize heat loss or gain and eliminates drafts ensuring a consistent indoor temperature. It also helps eliminate the entry of pollutants, allergens, and moisture, resulting in a healthier indoor environment. 

Shop our range of airtight membranes, tapes, grommets, and sealants.

Airtight and windtight systems | Insulation Merchant

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Showing 122 of 122 products

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Showing 122 of 122 products
  • SIGA Rissan® 60 VCL & Jointing Airtightness Tape - 60mm x 25m
    RISSAN® 60 by SIGA

    Translation missing: en.products.product.sku:SIG/R60

    SIGA Rissan® 60 VCL & Jointing Airtightness Tape - 60mm x 25m

    Regular price
    €28,95 EUR ex. GB VAT
    Unit Price
    €1,15 per LM (linear metre)
    Unit Price
    €0,97 per LM (linear metre)
    Sale price
    €28,95 EUR ex. GB VAT
    Unit Price
    €1,15 per LM (linear metre)
    Regular price
    you save €-28,95
    Unit Price
    €0,97 per LM (linear metre)
    Regular price
    €0,00 you save €-24,13
  • Pro Clima Contega Solido SL100 (Internal Single-sIded Corner Adhesive Tape) - 100mm x 30m
    CONTEGA SOLIDO SL by Pro Clima

    Translation missing: en.products.product.sku:PC/SOLSL100

    Pro Clima Contega Solido SL100 (Internal Single-sIded Corner Adhesive Tape) - 100mm x 30m

    Regular price
    €61,95 EUR ex. GB VAT
    Unit Price
    €2,06 per LM (linear metre)
    Unit Price
    €1,72 per LM (linear metre)
    Sale price
    €61,95 EUR ex. GB VAT
    Unit Price
    €2,06 per LM (linear metre)
    Regular price
    you save €-61,95
    Unit Price
    €1,72 per LM (linear metre)
    Regular price
    €0,00 you save €-51,63
  • Pro Clima Compego Tape
    COMPEGO by Pro Clima

    Translation missing: en.products.product.sku:PC/COM6025

    Pro Clima Compego Tape

    Regular price
    From €20,95 EUR ex. GB VAT
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    From €20,95 EUR ex. GB VAT
    Regular price
    you save €-20,95
    Regular price
    €0,00 you save €-17,46
  • 80m Pro Clima Duplex Double Sided Membrane Tape
    DUPLEX by Pro Clima

    Translation missing: en.products.product.sku:PC/DD80

    80m Pro Clima Duplex Double Sided Membrane Tape

    Regular price
    €26,95 EUR ex. GB VAT
    Unit Price
    €0,33 per LM (linear metre)
    Unit Price
    €0,28 per LM (linear metre)
    Sale price
    €26,95 EUR ex. GB VAT
    Unit Price
    €0,33 per LM (linear metre)
    Regular price
    you save €-26,95
    Unit Price
    €0,28 per LM (linear metre)
    Regular price
    €0,00 you save €-22,46
  • Pro Clima Kaflex Post - Retrofit Airtight Cable Grommet (Pack of 10)
    KAFLEX by Pro Clima

    Translation missing: en.products.product.sku:PC/KP-10

    Pro Clima Kaflex Post - Retrofit Airtight Cable Grommet (Pack of 10)

    Regular price
    €35,95 EUR ex. GB VAT
    Unit Price
    €3,59 per ea
    Unit Price
    €3,00 per ea
    Sale price
    €35,95 EUR ex. GB VAT
    Unit Price
    €3,59 per ea
    Regular price
    you save €-35,95
    Unit Price
    €3,00 per ea
    Regular price
    €0,00 you save €-29,96
  • SIGA Wigluv® 60 External Adhesive Tape (40m x 60mm)
    WIGLUV® 60 by SIGA

    Translation missing: en.products.product.sku:SIG/WL60

    SIGA Wigluv® 60 External Adhesive Tape (40m x 60mm)

    Regular price
    €46,95 EUR ex. GB VAT
    Unit Price
    €1,17 per LM (linear metre)
    Unit Price
    €0,98 per LM (linear metre)
    Sale price
    €46,95 EUR ex. GB VAT
    Unit Price
    €1,17 per LM (linear metre)
    Regular price
    you save €-46,95
    Unit Price
    €0,98 per LM (linear metre)
    Regular price
    €0,00 you save €-39,13
  • Pro Clima Tescon Naideck - Sealing Adhesive Tape (50mm x 20m)
    TESCON by Pro Clima

    Translation missing: en.products.product.sku:PC/NAIDEC

    Pro Clima Tescon Naideck - Sealing Adhesive Tape (50mm x 20m)

    Regular price
    €21,95 EUR ex. GB VAT
    Sale price
    €21,95 EUR ex. GB VAT
    Regular price
    you save €-21,95
    Regular price
    €0,00 you save €-18,29
  • Pro Clima Roflex 20 - Airtight Pipe Grommet (Pack of 15)
    ROFLEX by Pro Clima

    Translation missing: en.products.product.sku:PC/R20-15

    Pro Clima Roflex 20 - Airtight Pipe Grommet (Pack of 15)

    Regular price
    €45,95 EUR ex. GB VAT
    Unit Price
    €3,06 per ea
    Unit Price
    €2,55 per ea
    Sale price
    €45,95 EUR ex. GB VAT
    Unit Price
    €3,06 per ea
    Regular price
    you save €-45,95
    Unit Price
    €2,55 per ea
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    €0,00 you save €-38,29
  • 150mm Pro Clima Tescon Vana - Sealing Adhesive Tape (30m)
    TESCON by Pro Clima

    Translation missing: en.products.product.sku:PC/TV-15

    150mm Pro Clima Tescon Vana - Sealing Adhesive Tape (30m)

    Regular price
    €80,95 EUR ex. GB VAT
    Unit Price
    €2,69 per LM (linear metre)
    Unit Price
    €2,25 per LM (linear metre)
    Sale price
    €80,95 EUR ex. GB VAT
    Unit Price
    €2,69 per LM (linear metre)
    Regular price
    you save €-80,95
    Unit Price
    €2,25 per LM (linear metre)
    Regular price
    €0,00 you save €-67,46
  • SIGA Twinet® 20 VCL Mounting Tape
    TWINET® by SIGA

    Translation missing: en.products.product.sku:SIG/T20

    SIGA Twinet® 20 VCL Mounting Tape

    Regular price
    €39,95 EUR ex. GB VAT
    Unit Price
    €0,79 per LM (linear metre)
    Unit Price
    €0,67 per LM (linear metre)
    Sale price
    €39,95 EUR ex. GB VAT
    Unit Price
    €0,79 per LM (linear metre)
    Regular price
    you save €-39,95
    Unit Price
    €0,67 per LM (linear metre)
    Regular price
    €0,00 you save €-33,29
  • SIGA Majrex® 200 (1-directional) Airtight Humidity Vapour Control Layer - 1.5 x 50m (75m²)
    MAJREX® by SIGA

    Translation missing: en.products.product.sku:SIG/MR200

    SIGA Majrex® 200 (1-directional) Airtight Humidity Vapour Control Layer - 1.5 x 50m (75m²)

    Regular price
    €389,95 EUR ex. GB VAT
    Unit Price
    €5,19 per m²
    Unit Price
    €4,33 per m²
    Sale price
    €389,95 EUR ex. GB VAT
    Unit Price
    €5,19 per m²
    Regular price
    you save €-389,95
    Unit Price
    €4,33 per m²
    Regular price
    €0,00 you save €-324,96
  • SIGA Majpell® 5 Vapour Control Layer - 1.5 x 50m (75m²)
    MAJPELL® 5 VCL by SIGA

    Translation missing: en.products.product.sku:SIG/MP5-15

    SIGA Majpell® 5 Vapour Control Layer - 1.5 x 50m (75m²)

    Regular price
    €239,95 EUR ex. GB VAT
    Unit Price
    €3,19 per m²
    Unit Price
    €2,67 per m²
    Sale price
    €239,95 EUR ex. GB VAT
    Unit Price
    €3,19 per m²
    Regular price
    you save €-239,95
    Unit Price
    €2,67 per m²
    Regular price
    €0,00 you save €-199,96
  • Pro Clima Extoseal Encors - 100mm x 20m
    EXTOSEAL by Pro Clima

    Translation missing: en.products.product.sku:PC/ENCORS100

    Pro Clima Extoseal Encors - 100mm x 20m

    Regular price
    €94,95 EUR ex. GB VAT
    Unit Price
    €4,74 per LM (linear metre)
    Unit Price
    €3,96 per LM (linear metre)
    Sale price
    €94,95 EUR ex. GB VAT
    Unit Price
    €4,74 per LM (linear metre)
    Regular price
    you save €-94,95
    Unit Price
    €3,96 per LM (linear metre)
    Regular price
    €0,00 you save €-79,13
  • Pro Clima Kaflex Mono - Airtight Cable Grommet (Pack of 15)
    KAFLEX by Pro Clima

    Translation missing: en.products.product.sku:PC/KM612-15

    Pro Clima Kaflex Mono - Airtight Cable Grommet (Pack of 15)

    Regular price
    €46,95 EUR ex. GB VAT
    Sale price
    €46,95 EUR ex. GB VAT
    Regular price
    you save €-46,95
    Regular price
    €0,00 you save €-39,13
  • SIGA Majcoat® 200 SOB Diffusion Open Roof Breather Membrane - 1.5m x 50m
    MAJCOAT® 200 by SIGA

    Translation missing: en.products.product.sku:SIG/MC200S

    SIGA Majcoat® 200 SOB Diffusion Open Roof Breather Membrane - 1.5m x 50m

    Regular price
    €325,95 EUR ex. GB VAT
    Unit Price
    €4,34 per m²
    Unit Price
    €3,62 per m²
    Sale price
    €325,95 EUR ex. GB VAT
    Unit Price
    €4,34 per m²
    Regular price
    you save €-325,95
    Unit Price
    €3,62 per m²
    Regular price
    €0,00 you save €-271,63
  • Pro Clima Contega Solido EXO100 (External Single-sIded Corner Adhesive Tape) - 30m x 100mm
    CONTEGA SOLIDO EXO by Pro Clima

    Translation missing: en.products.product.sku:PC/SOLEXO100

    Pro Clima Contega Solido EXO100 (External Single-sIded Corner Adhesive Tape) - 30m x 100mm

    Regular price
    €61,95 EUR ex. GB VAT
    Sale price
    €61,95 EUR ex. GB VAT
    Regular price
    you save €-61,95
    Regular price
    €0,00 you save €-51,63
  • SIGA Wigluv® 20/40 Split External Adhesive Tape (60mm x 25m)
    WIGLUV® 20/40 by SIGA

    Translation missing: en.products.product.sku:SIG/WL2040

    SIGA Wigluv® 20/40 Split External Adhesive Tape (60mm x 25m)

    Regular price
    €42,95 EUR ex. GB VAT
    Unit Price
    €1,71 per LM (linear metre)
    Unit Price
    €1,43 per LM (linear metre)
    Sale price
    €42,95 EUR ex. GB VAT
    Unit Price
    €1,71 per LM (linear metre)
    Regular price
    you save €-42,95
    Unit Price
    €1,43 per LM (linear metre)
    Regular price
    €0,00 you save €-35,79
  • Pro Clima Aerosanna Visconn Spray/Paintable Airtight Sealant Membrane
    AEROSANA VISCONN by Pro Clima

    Translation missing: en.products.product.sku:PC/AVB10L

    Pro Clima Aerosanna Visconn Spray/Paintable Airtight Sealant Membrane

    Regular price
    From €10,95 EUR ex. GB VAT
    Sale price
    From €10,95 EUR ex. GB VAT
    Regular price
    you save €-10,95
    Regular price
    €0,00 you save €-9,13
  • Pro Clima Contega Solido SL-D80 (External Double-sIded Corner Adhesive Tape) - 80mm x 30m
    CONTEGA SOLIDO SL-D by Pro Clima

    Translation missing: en.products.product.sku:PC/SOLSLD80

    Pro Clima Contega Solido SL-D80 (External Double-sIded Corner Adhesive Tape) - 80mm x 30m

    Regular price
    €67,95 EUR ex. GB VAT
    Unit Price
    €2,26 per LM (linear metre)
    Unit Price
    €1,89 per LM (linear metre)
    Sale price
    €67,95 EUR ex. GB VAT
    Unit Price
    €2,26 per LM (linear metre)
    Regular price
    you save €-67,95
    Unit Price
    €1,89 per LM (linear metre)
    Regular price
    €0,00 you save €-56,63
  • Pro Clima Solitex Fronta Quattro - Open Facade Membrane (1.5m x 50m)
    SOLITEX by Pro Clima

    Translation missing: en.products.product.sku:PC/FQ

    Pro Clima Solitex Fronta Quattro - Open Facade Membrane (1.5m x 50m)

    Regular price
    €374,95 EUR ex. GB VAT
    Unit Price
    €4,99 per m²
    Unit Price
    €4,17 per m²
    Sale price
    €374,95 EUR ex. GB VAT
    Unit Price
    €4,99 per m²
    Regular price
    you save €-374,95
    Unit Price
    €4,17 per m²
    Regular price
    €0,00 you save €-312,46